133033537 has 16 divisors (see below), whose sum is σ = 168163072. Its totient is φ = 102409920.

The previous prime is 133033501. The next prime is 133033543. The reversal of 133033537 is 735330331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133033537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133033597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16389 + ... + 23122.

It is an arithmetic number, because the mean of its divisors is an integer number (10510192).

Almost surely, 2^133033537 is an apocalyptic number.

It is an amenable number.

133033537 is a deficient number, since it is larger than the sum of its proper divisors (35129535).

133033537 is a wasteful number, since it uses less digits than its factorization.

133033537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39568.

The product of its (nonzero) digits is 8505, while the sum is 28.

The square root of 133033537 is about 11534.0165163745. The cubic root of 133033537 is about 510.4897729973.

Adding to 133033537 its reverse (735330331), we get a palindrome (868363868).

The spelling of 133033537 in words is "one hundred thirty-three million, thirty-three thousand, five hundred thirty-seven".